Jets are sensitive probes of final-state effects in heavy ion collisions. The jet quenching phenomenon is understood to arise from the interaction of hard-scattered partons with the quark-gluon plasma produced in such collisions [1]}. The first observable used to probe this phenomenon at the LHC was the transverse momentum () balance of back-to-back jets [2]}, [3]}, [4]}, [5]}. Quenching imparts a net imbalance to dijets that exceeds the imbalance from QCD radiation in vacuum, as measured in \(\)  collisions. This additional imbalance is expected based on the difference of the in-medium path-length traversed by the two jets. However, jet-by-jet fluctuation of the quenching may also play a role, and could even be dominant [6]}.
